PbS quantum dots and BaF2:Tm3+ nanocrystals co-doped glass for ultra-broadband near-infrared emission [Invited]

Wei Wang; Qinpeng Chen; Yifei Zhao; Yakun Le; Shengda Ye; Mang Wan; Xiongjian Huang; Guoping Dong

doi:10.3788/COL202220.021603

Journals >Chinese Optics Letters >Volume 20 >Issue 2 >Page 021603 > Article

Chinese Optics Letters
Vol. 20, Issue 2, 021603 (2022)

PbS quantum dots and BaF₂:Tm³⁺ nanocrystals co-doped glass for ultra-broadband near-infrared emission [Invited]

Wei Wang¹, Qinpeng Chen¹, Yifei Zhao², Yakun Le¹, Shengda Ye¹, Mang Wan³, Xiongjian Huang^1、4、*, and Guoping Dong^1、**

Author Affiliations

¹State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China

²Department of Chemistry, City University of Hong Kong, Kowloon 999077, Hong Kong, China

³Analytical and Testing Center, South China University of Technology, Guangzhou 510640, China

⁴School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China

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DOI: 10.3788/COL202220.021603 Cite this Article Set citation alerts

Wei Wang, Qinpeng Chen, Yifei Zhao, Yakun Le, Shengda Ye, Mang Wan, Xiongjian Huang, Guoping Dong. PbS quantum dots and BaF₂:Tm³⁺ nanocrystals co-doped glass for ultra-broadband near-infrared emission [Invited][J]. Chinese Optics Letters, 2022, 20(2): 021603 Copy Citation Text

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Abstract

With the rapid growth of optical communications traffic, the demand for broadband optical amplifiers continues to increase. It is necessary to develop a gain medium that covers more optical communication bands. We precipitated PbS quantum dots (QDs) and

{BaF}_{2} : {Tm}^{3 +}

nanocrystals (NCs) in the same glass to form two independent emission centers. The

{BaF}_{2}

NCs in the glass can provide a crystal field environment with low phonon energy for rare earth (RE) ions and prevent the energy transfer between RE ions and PbS QDs. By adjusting the heat treatment schedule, the emission of the two luminescence centers from PbS QDs and

{Tm}^{3 +}

ions perfectly splices and covers the ultra-broadband near-infrared emission from 1200 nm to 2000 nm with bandwidth over 430 nm. Therefore, it is expected to be a promising broadband gain medium for fiber amplifiers.

Keywords

broadband near-infrared emission nanocrystal-glass composite PbS quantum dot Tm3+